Home Uncategorized Active Lots & Lands – Belmont – 94002 – San Mateo County – CA – 1/6 By siteeditor. Published on 28 1 月, 2014. Active Lots & Lands – Belmont – 94002 – San Mateo County – CA – 1/6 3900 MARSTEN AVENUE, Belmont 94002 Approx Lot: 18.1 Acres Type: Single Family Residential Land Orig. Price: $2,688,000